Improvement in preparing elastic india-rubber cloth



UNITED STATES.

PATENT OFFICE.

CHARLES VVINSLOW, OF LYNN, MASSACHUSETTS.

IMPROVEMENT m PREPARING ELASTIC INDIA-RUBBER CLOTH.

Specification forming part of Letters Patent No. 17,649, dated June 23, 1857.

To all whom it may concern Be it known that I, CHARLES WnvsLow, of Lynn, in the State of Massachusetts, have invented a new and useful Mode of Preparing Elastic Cloth for use.

There are different kinds of elastic cloth made of india-rubber and guttapercha compounds. One kind is known as shevred goods and the solis goods, and which are made of gum-elastic cords and have a corded or ribbed surface. The other kind is made without the use of cords, and presents an even, smooth surface, such as the goods made according to the Letters Patent of Henry G. Tyer and John Helm.

The goods which have the corded surface are elastic in the direction of the cords, and the cords afford a sufficient guide for the cutting; but in goods with an even surface there is no guide, and the result is that it is very difficult for workmen to ascertain the right direction for cutting, and many goods have therefore been spoiled or greatly injured by cutting them in the Wrong direction. My invention is to meet this demand by so finishing the goods as to furnish an easy and certain means or guide to secure the cutting in the proper direction.

To practically secure the elasticity of the aforesaid smooth-surface cloth. it must be cut for use in a certain direction that is,so that the intended stretch or elongation shall be in the direction of the shortest diagonal of the meshes of the woven fabric employed therein, and if out in any other direction it becomes comparatively worthless' To enable others to employ my said invention,.I will describe the mode of accomplishing it. I

The meshes of the cloth are so formed that the shortest diagonal thereof is in an oblique direction to the edge or.selvage of the piece. I take a piece of the cloth, and, having ascertained in what direction the threads run, both of the filling and of the warp, I draw two lines (and short ones will do) in that direction, say, of the warp, and at a short distame from eacn other, say one inch apart. I then draw two other lines in the direction of the threads of the filling at about the same distance apart and intersecting the former two lines. In this way I form a figure between the fourlines corresponding in form and the direction of its sides with the meshes of the cloth. I then draw a-line through the two obtuse angles of this figure and to a considerable distance beyond. This line will describe and represent the direction of the shortest diagonal of the meshes formed by the threads of the cloth. I then set the lining or ruling instrument, which may be a parallel ruler or any other adapted to multiply parallel lines, so as to coincide with this diagonal, and lay out or line the cloth at such distances therefrom, and the lines at such distances apart, as may be desiredsay, at a distance of from one two inches apart. The cloth can then be conveniently and properly cut by the cutter, being guided by and following the direction of said parallel lines.

What I claim as my invention, and desire to secure by Letters Patent, is I The method of preparing elastic cloth for use by the application thereto of parallel lines in the direction of the shortest diagonal of the meshes formed by the threads of the cloth.

. CHARLES VVINSLOW. In presence of I R. S. OOLLY R, B. F. MUDGE. 

